Step 1- Start by taping a flying key wing template to the inner side of your plastic. (I hadn’t found a flying key wing template earlier, so, I used a butterfly wing template.) Trace it with a black permanent marker and fill in the wing.

Step 2- Cut out the coloured-in wing .

Step 4- Bend it in half.

Step 4- Choose out your key. I found some metal antique ones online that looked like the real ones. An alternative is to use clay keys. Glue your keys in the middle of the wings.